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Belfast Weather: Sun, Showers, and Shifting Temps
20 Sep
Summary
- Belfast expects sunny intervals with a low chance of light rain today.
- Mild temperatures today will reach a high of 17°C and a low of 13°C.
- The coming week shows rising temperatures, then cooler days with rain.
Today, September 20, 2026, Belfast is set for a day of sunny intervals, with temperatures peaking at 17°C and dipping to 13°C. While sunshine is expected, periods of cloud cover will also be present. There is a less than 5% chance of rain, indicating a largely dry day, though a brief shower is possible. Moderate winds might create a cooler feel, and high humidity levels of 84% will make the air feel damp.
Looking forward, Belfast's weather is predicted to become more varied over the next week. Tomorrow, September 21, will be significantly warmer with a high of 21°C under overcast skies. September 22 will see a slight drop to 20°C maximum with light rain. The latter half of the week anticipates unsettled conditions, featuring sunny intervals and clouds, with minimum temperatures dropping to 10°C on September 23. The week will conclude with a mix of light rain and cloudy weather.
